I am upgrading an older road bike to a 9 speed with a triple in the front and was given a brand new set of 10 speed Ultegra Sti Brake Lever Shifters. I wanted to use a 9 speed Ultegra cassette and derailleur with these shifters. Looking on another forum I found someone who said that a set of 10 speed Ultegra shifters should work with my 9 speed gear as long as I use the alternate b position for the cable on my rear derailleur. I then called Shimano and spoke with a rep who after consulting some other workers agreed that the 10 should work with the 9 gear but wasn’t sure exactly how it is done and said that there is no official literature explaining this process on the Shimano site.
So my question is, has anyone tried to do this and if so can you give me any tips or explain the process. Thanks for your help.
So my question is, has anyone tried to do this and if so can you give me any tips or explain the process. Thanks for your help.